﻿/*!
 * Isotope PACKAGED v3.0.6
 *
 * Licensed GPLv3 for open source use
 * or Isotope Commercial License for commercial use
 *
 * https://isotope.metafizzy.co
 * Copyright 2010-2018 Metafizzy
 */

/**
 * Bridget makes jQuery widgets
 * v2.0.1
 * MIT license
 */

/* jshint browser: true, strict: true, undef: true, unused: true */

(function (window, factory) {
    // universal module definition
    /*jshint strict: false */ /* globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('jquery-bridget/jquery-bridget', ['jquery'], function (jQuery) {
            return factory(window, jQuery);
        });
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            window,
            require('jquery')
        );
    } else {
        // browser global
        window.jQueryBridget = factory(
            window,
            window.jQuery
        );
    }

}(window, function factory(window, jQuery) {
    'use strict';

    // ----- utils ----- //

    var arraySlice = Array.prototype.slice;

    // helper function for logging errors
    // $.error breaks jQuery chaining
    var console = window.console;
    var logError = typeof console == 'undefined' ? function () { } :
        function (message) {
            console.error(message);
        };

    // ----- jQueryBridget ----- //

    function jQueryBridget(namespace, PluginClass, $) {
        $ = $ || jQuery || window.jQuery;
        if (!$) {
            return;
        }

        // add option method -> $().plugin('option', {...})
        if (!PluginClass.prototype.option) {
            // option setter
            PluginClass.prototype.option = function (opts) {
                // bail out if not an object
                if (!$.isPlainObject(opts)) {
                    return;
                }
                this.options = $.extend(true, this.options, opts);
            };
        }

        // make jQuery plugin
        $.fn[namespace] = function (arg0 /*, arg1 */) {
            if (typeof arg0 == 'string') {
                // method call $().plugin( 'methodName', { options } )
                // shift arguments by 1
                var args = arraySlice.call(arguments, 1);
                return methodCall(this, arg0, args);
            }
            // just $().plugin({ options })
            plainCall(this, arg0);
            return this;
        };

        // $().plugin('methodName')
        function methodCall($elems, methodName, args) {
            var returnValue;
            var pluginMethodStr = '$().' + namespace + '("' + methodName + '")';

            $elems.each(function (i, elem) {
                // get instance
                var instance = $.data(elem, namespace);
                if (!instance) {
                    logError(namespace + ' not initialized. Cannot call methods, i.e. ' +
                        pluginMethodStr);
                    return;
                }

                var method = instance[methodName];
                if (!method || methodName.charAt(0) == '_') {
                    logError(pluginMethodStr + ' is not a valid method');
                    return;
                }

                // apply method, get return value
                var value = method.apply(instance, args);
                // set return value if value is returned, use only first value
                returnValue = returnValue === undefined ? value : returnValue;
            });

            return returnValue !== undefined ? returnValue : $elems;
        }

        function plainCall($elems, options) {
            $elems.each(function (i, elem) {
                var instance = $.data(elem, namespace);
                if (instance) {
                    // set options & init
                    instance.option(options);
                    instance._init();
                } else {
                    // initialize new instance
                    instance = new PluginClass(elem, options);
                    $.data(elem, namespace, instance);
                }
            });
        }

        updateJQuery($);

    }

    // ----- updateJQuery ----- //

    // set $.bridget for v1 backwards compatibility
    function updateJQuery($) {
        if (!$ || ($ && $.bridget)) {
            return;
        }
        $.bridget = jQueryBridget;
    }

    updateJQuery(jQuery || window.jQuery);

    // -----  ----- //

    return jQueryBridget;

}));

/**
 * EvEmitter v1.1.0
 * Lil' event emitter
 * MIT License
 */

/* jshint unused: true, undef: true, strict: true */

(function (global, factory) {
    // universal module definition
    /* jshint strict: false */ /* globals define, module, window */
    if (typeof define == 'function' && define.amd) {
        // AMD - RequireJS
        define('ev-emitter/ev-emitter', factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS - Browserify, Webpack
        module.exports = factory();
    } else {
        // Browser globals
        global.EvEmitter = factory();
    }

}(typeof window != 'undefined' ? window : this, function () {



    function EvEmitter() { }

    var proto = EvEmitter.prototype;

    proto.on = function (eventName, listener) {
        if (!eventName || !listener) {
            return;
        }
        // set events hash
        var events = this._events = this._events || {};
        // set listeners array
        var listeners = events[eventName] = events[eventName] || [];
        // only add once
        if (listeners.indexOf(listener) == -1) {
            listeners.push(listener);
        }

        return this;
    };

    proto.once = function (eventName, listener) {
        if (!eventName || !listener) {
            return;
        }
        // add event
        this.on(eventName, listener);
        // set once flag
        // set onceEvents hash
        var onceEvents = this._onceEvents = this._onceEvents || {};
        // set onceListeners object
        var onceListeners = onceEvents[eventName] = onceEvents[eventName] || {};
        // set flag
        onceListeners[listener] = true;

        return this;
    };

    proto.off = function (eventName, listener) {
        var listeners = this._events && this._events[eventName];
        if (!listeners || !listeners.length) {
            return;
        }
        var index = listeners.indexOf(listener);
        if (index != -1) {
            listeners.splice(index, 1);
        }

        return this;
    };

    proto.emitEvent = function (eventName, args) {
        var listeners = this._events && this._events[eventName];
        if (!listeners || !listeners.length) {
            return;
        }
        // copy over to avoid interference if .off() in listener
        listeners = listeners.slice(0);
        args = args || [];
        // once stuff
        var onceListeners = this._onceEvents && this._onceEvents[eventName];

        for (var i = 0; i < listeners.length; i++) {
            var listener = listeners[i]
            var isOnce = onceListeners && onceListeners[listener];
            if (isOnce) {
                // remove listener
                // remove before trigger to prevent recursion
                this.off(eventName, listener);
                // unset once flag
                delete onceListeners[listener];
            }
            // trigger listener
            listener.apply(this, args);
        }

        return this;
    };

    proto.allOff = function () {
        delete this._events;
        delete this._onceEvents;
    };

    return EvEmitter;

}));

/*!
 * getSize v2.0.3
 * measure size of elements
 * MIT license
 */

/* jshint browser: true, strict: true, undef: true, unused: true */
/* globals console: false */

(function (window, factory) {
    /* jshint strict: false */ /* globals define, module */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('get-size/get-size', factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory();
    } else {
        // browser global
        window.getSize = factory();
    }

})(window, function factory() {
    'use strict';

    // -------------------------- helpers -------------------------- //

    // get a number from a string, not a percentage
    function getStyleSize(value) {
        var num = parseFloat(value);
        // not a percent like '100%', and a number
        var isValid = value.indexOf('%') == -1 && !isNaN(num);
        return isValid && num;
    }

    function noop() { }

    var logError = typeof console == 'undefined' ? noop :
        function (message) {
            console.error(message);
        };

    // -------------------------- measurements -------------------------- //

    var measurements = [
        'paddingLeft',
        'paddingRight',
        'paddingTop',
        'paddingBottom',
        'marginLeft',
        'marginRight',
        'marginTop',
        'marginBottom',
        'borderLeftWidth',
        'borderRightWidth',
        'borderTopWidth',
        'borderBottomWidth'
    ];

    var measurementsLength = measurements.length;

    function getZeroSize() {
        var size = {
            width: 0,
            height: 0,
            innerWidth: 0,
            innerHeight: 0,
            outerWidth: 0,
            outerHeight: 0
        };
        for (var i = 0; i < measurementsLength; i++) {
            var measurement = measurements[i];
            size[measurement] = 0;
        }
        return size;
    }

    // -------------------------- getStyle -------------------------- //

    /**
     * getStyle, get style of element, check for Firefox bug
     * https://bugzilla.mozilla.org/show_bug.cgi?id=548397
     */
    function getStyle(elem) {
        var style = getComputedStyle(elem);
        if (!style) {
            logError('Style returned ' + style +
                '. Are you running this code in a hidden iframe on Firefox? ' +
                'See https://bit.ly/getsizebug1');
        }
        return style;
    }

    // -------------------------- setup -------------------------- //

    var isSetup = false;

    var isBoxSizeOuter;

    /**
     * setup
     * check isBoxSizerOuter
     * do on first getSize() rather than on page load for Firefox bug
     */
    function setup() {
        // setup once
        if (isSetup) {
            return;
        }
        isSetup = true;

        // -------------------------- box sizing -------------------------- //

        /**
         * Chrome & Safari measure the outer-width on style.width on border-box elems
         * IE11 & Firefox<29 measures the inner-width
         */
        var div = document.createElement('div');
        div.style.width = '200px';
        div.style.padding = '1px 2px 3px 4px';
        div.style.borderStyle = 'solid';
        div.style.borderWidth = '1px 2px 3px 4px';
        div.style.boxSizing = 'border-box';

        var body = document.body || document.documentElement;
        body.appendChild(div);
        var style = getStyle(div);
        // round value for browser zoom. desandro/masonry#928
        isBoxSizeOuter = Math.round(getStyleSize(style.width)) == 200;
        getSize.isBoxSizeOuter = isBoxSizeOuter;

        body.removeChild(div);
    }

    // -------------------------- getSize -------------------------- //

    function getSize(elem) {
        setup();

        // use querySeletor if elem is string
        if (typeof elem == 'string') {
            elem = document.querySelector(elem);
        }

        // do not proceed on non-objects
        if (!elem || typeof elem != 'object' || !elem.nodeType) {
            return;
        }

        var style = getStyle(elem);

        // if hidden, everything is 0
        if (style.display == 'none') {
            return getZeroSize();
        }

        var size = {};
        size.width = elem.offsetWidth;
        size.height = elem.offsetHeight;

        var isBorderBox = size.isBorderBox = style.boxSizing == 'border-box';

        // get all measurements
        for (var i = 0; i < measurementsLength; i++) {
            var measurement = measurements[i];
            var value = style[measurement];
            var num = parseFloat(value);
            // any 'auto', 'medium' value will be 0
            size[measurement] = !isNaN(num) ? num : 0;
        }

        var paddingWidth = size.paddingLeft + size.paddingRight;
        var paddingHeight = size.paddingTop + size.paddingBottom;
        var marginWidth = size.marginLeft + size.marginRight;
        var marginHeight = size.marginTop + size.marginBottom;
        var borderWidth = size.borderLeftWidth + size.borderRightWidth;
        var borderHeight = size.borderTopWidth + size.borderBottomWidth;

        var isBorderBoxSizeOuter = isBorderBox && isBoxSizeOuter;

        // overwrite width and height if we can get it from style
        var styleWidth = getStyleSize(style.width);
        if (styleWidth !== false) {
            size.width = styleWidth +
                // add padding and border unless it's already including it
                (isBorderBoxSizeOuter ? 0 : paddingWidth + borderWidth);
        }

        var styleHeight = getStyleSize(style.height);
        if (styleHeight !== false) {
            size.height = styleHeight +
                // add padding and border unless it's already including it
                (isBorderBoxSizeOuter ? 0 : paddingHeight + borderHeight);
        }

        size.innerWidth = size.width - (paddingWidth + borderWidth);
        size.innerHeight = size.height - (paddingHeight + borderHeight);

        size.outerWidth = size.width + marginWidth;
        size.outerHeight = size.height + marginHeight;

        return size;
    }

    return getSize;

});

/**
 * matchesSelector v2.0.2
 * matchesSelector( element, '.selector' )
 * MIT license
 */

/*jshint browser: true, strict: true, undef: true, unused: true */

(function (window, factory) {
    /*global define: false, module: false */
    'use strict';
    // universal module definition
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('desandro-matches-selector/matches-selector', factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory();
    } else {
        // browser global
        window.matchesSelector = factory();
    }

}(window, function factory() {
    'use strict';

    var matchesMethod = (function () {
        var ElemProto = window.Element.prototype;
        // check for the standard method name first
        if (ElemProto.matches) {
            return 'matches';
        }
        // check un-prefixed
        if (ElemProto.matchesSelector) {
            return 'matchesSelector';
        }
        // check vendor prefixes
        var prefixes = ['webkit', 'moz', 'ms', 'o'];

        for (var i = 0; i < prefixes.length; i++) {
            var prefix = prefixes[i];
            var method = prefix + 'MatchesSelector';
            if (ElemProto[method]) {
                return method;
            }
        }
    })();

    return function matchesSelector(elem, selector) {
        return elem[matchesMethod](selector);
    };

}));

/**
 * Fizzy UI utils v2.0.7
 * MIT license
 */

/*jshint browser: true, undef: true, unused: true, strict: true */

(function (window, factory) {
    // universal module definition
    /*jshint strict: false */ /*globals define, module, require */

    if (typeof define == 'function' && define.amd) {
        // AMD
        define('fizzy-ui-utils/utils', [
            'desandro-matches-selector/matches-selector'
        ], function (matchesSelector) {
            return factory(window, matchesSelector);
        });
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            window,
            require('desandro-matches-selector')
        );
    } else {
        // browser global
        window.fizzyUIUtils = factory(
            window,
            window.matchesSelector
        );
    }

}(window, function factory(window, matchesSelector) {



    var utils = {};

    // ----- extend ----- //

    // extends objects
    utils.extend = function (a, b) {
        for (var prop in b) {
            a[prop] = b[prop];
        }
        return a;
    };

    // ----- modulo ----- //

    utils.modulo = function (num, div) {
        return ((num % div) + div) % div;
    };

    // ----- makeArray ----- //

    var arraySlice = Array.prototype.slice;

    // turn element or nodeList into an array
    utils.makeArray = function (obj) {
        if (Array.isArray(obj)) {
            // use object if already an array
            return obj;
        }
        // return empty array if undefined or null. #6
        if (obj === null || obj === undefined) {
            return [];
        }

        var isArrayLike = typeof obj == 'object' && typeof obj.length == 'number';
        if (isArrayLike) {
            // convert nodeList to array
            return arraySlice.call(obj);
        }

        // array of single index
        return [obj];
    };

    // ----- removeFrom ----- //

    utils.removeFrom = function (ary, obj) {
        var index = ary.indexOf(obj);
        if (index != -1) {
            ary.splice(index, 1);
        }
    };

    // ----- getParent ----- //

    utils.getParent = function (elem, selector) {
        while (elem.parentNode && elem != document.body) {
            elem = elem.parentNode;
            if (matchesSelector(elem, selector)) {
                return elem;
            }
        }
    };

    // ----- getQueryElement ----- //

    // use element as selector string
    utils.getQueryElement = function (elem) {
        if (typeof elem == 'string') {
            return document.querySelector(elem);
        }
        return elem;
    };

    // ----- handleEvent ----- //

    // enable .ontype to trigger from .addEventListener( elem, 'type' )
    utils.handleEvent = function (event) {
        var method = 'on' + event.type;
        if (this[method]) {
            this[method](event);
        }
    };

    // ----- filterFindElements ----- //

    utils.filterFindElements = function (elems, selector) {
        // make array of elems
        elems = utils.makeArray(elems);
        var ffElems = [];

        elems.forEach(function (elem) {
            // check that elem is an actual element
            if (!(elem instanceof HTMLElement)) {
                return;
            }
            // add elem if no selector
            if (!selector) {
                ffElems.push(elem);
                return;
            }
            // filter & find items if we have a selector
            // filter
            if (matchesSelector(elem, selector)) {
                ffElems.push(elem);
            }
            // find children
            var childElems = elem.querySelectorAll(selector);
            // concat childElems to filterFound array
            for (var i = 0; i < childElems.length; i++) {
                ffElems.push(childElems[i]);
            }
        });

        return ffElems;
    };

    // ----- debounceMethod ----- //

    utils.debounceMethod = function (_class, methodName, threshold) {
        threshold = threshold || 100;
        // original method
        var method = _class.prototype[methodName];
        var timeoutName = methodName + 'Timeout';

        _class.prototype[methodName] = function () {
            var timeout = this[timeoutName];
            clearTimeout(timeout);

            var args = arguments;
            var _this = this;
            this[timeoutName] = setTimeout(function () {
                method.apply(_this, args);
                delete _this[timeoutName];
            }, threshold);
        };
    };

    // ----- docReady ----- //

    utils.docReady = function (callback) {
        var readyState = document.readyState;
        if (readyState == 'complete' || readyState == 'interactive') {
            // do async to allow for other scripts to run. metafizzy/flickity#441
            setTimeout(callback);
        } else {
            document.addEventListener('DOMContentLoaded', callback);
        }
    };

    // ----- htmlInit ----- //

    // http://jamesroberts.name/blog/2010/02/22/string-functions-for-javascript-trim-to-camel-case-to-dashed-and-to-underscore/
    utils.toDashed = function (str) {
        return str.replace(/(.)([A-Z])/g, function (match, $1, $2) {
            return $1 + '-' + $2;
        }).toLowerCase();
    };

    var console = window.console;
    /**
     * allow user to initialize classes via [data-namespace] or .js-namespace class
     * htmlInit( Widget, 'widgetName' )
     * options are parsed from data-namespace-options
     */
    utils.htmlInit = function (WidgetClass, namespace) {
        utils.docReady(function () {
            var dashedNamespace = utils.toDashed(namespace);
            var dataAttr = 'data-' + dashedNamespace;
            var dataAttrElems = document.querySelectorAll('[' + dataAttr + ']');
            var jsDashElems = document.querySelectorAll('.js-' + dashedNamespace);
            var elems = utils.makeArray(dataAttrElems)
                .concat(utils.makeArray(jsDashElems));
            var dataOptionsAttr = dataAttr + '-options';
            var jQuery = window.jQuery;

            elems.forEach(function (elem) {
                var attr = elem.getAttribute(dataAttr) ||
                    elem.getAttribute(dataOptionsAttr);
                var options;
                try {
                    options = attr && JSON.parse(attr);
                } catch (error) {
                    // log error, do not initialize
                    if (console) {
                        console.error('Error parsing ' + dataAttr + ' on ' + elem.className +
                            ': ' + error);
                    }
                    return;
                }
                // initialize
                var instance = new WidgetClass(elem, options);
                // make available via $().data('namespace')
                if (jQuery) {
                    jQuery.data(elem, namespace, instance);
                }
            });

        });
    };

    // -----  ----- //

    return utils;

}));

/**
 * Outlayer Item
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /* globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD - RequireJS
        define('outlayer/item', [
            'ev-emitter/ev-emitter',
            'get-size/get-size'
        ],
            factory
        );
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS - Browserify, Webpack
        module.exports = factory(
            require('ev-emitter'),
            require('get-size')
        );
    } else {
        // browser global
        window.Outlayer = {};
        window.Outlayer.Item = factory(
            window.EvEmitter,
            window.getSize
        );
    }

}(window, function factory(EvEmitter, getSize) {
    'use strict';

    // ----- helpers ----- //

    function isEmptyObj(obj) {
        for (var prop in obj) {
            return false;
        }
        prop = null;
        return true;
    }

    // -------------------------- CSS3 support -------------------------- //


    var docElemStyle = document.documentElement.style;

    var transitionProperty = typeof docElemStyle.transition == 'string' ?
        'transition' : 'WebkitTransition';
    var transformProperty = typeof docElemStyle.transform == 'string' ?
        'transform' : 'WebkitTransform';

    var transitionEndEvent = {
        WebkitTransition: 'webkitTransitionEnd',
        transition: 'transitionend'
    }[transitionProperty];

    // cache all vendor properties that could have vendor prefix
    var vendorProperties = {
        transform: transformProperty,
        transition: transitionProperty,
        transitionDuration: transitionProperty + 'Duration',
        transitionProperty: transitionProperty + 'Property',
        transitionDelay: transitionProperty + 'Delay'
    };

    // -------------------------- Item -------------------------- //

    function Item(element, layout) {
        if (!element) {
            return;
        }

        this.element = element;
        // parent layout class, i.e. Masonry, Isotope, or Packery
        this.layout = layout;
        this.position = {
            x: 0,
            y: 0
        };

        this._create();
    }

    // inherit EvEmitter
    var proto = Item.prototype = Object.create(EvEmitter.prototype);
    proto.constructor = Item;

    proto._create = function () {
        // transition objects
        this._transn = {
            ingProperties: {},
            clean: {},
            onEnd: {}
        };

        this.css({
            position: 'absolute'
        });
    };

    // trigger specified handler for event type
    proto.handleEvent = function (event) {
        var method = 'on' + event.type;
        if (this[method]) {
            this[method](event);
        }
    };

    proto.getSize = function () {
        this.size = getSize(this.element);
    };

    /**
     * apply CSS styles to element
     * @param {Object} style
     */
    proto.css = function (style) {
        var elemStyle = this.element.style;

        for (var prop in style) {
            // use vendor property if available
            var supportedProp = vendorProperties[prop] || prop;
            elemStyle[supportedProp] = style[prop];
        }
    };

    // measure position, and sets it
    proto.getPosition = function () {
        var style = getComputedStyle(this.element);
        var isOriginLeft = this.layout._getOption('originLeft');
        var isOriginTop = this.layout._getOption('originTop');
        var xValue = style[isOriginLeft ? 'left' : 'right'];
        var yValue = style[isOriginTop ? 'top' : 'bottom'];
        var x = parseFloat(xValue);
        var y = parseFloat(yValue);
        // convert percent to pixels
        var layoutSize = this.layout.size;
        if (xValue.indexOf('%') != -1) {
            x = (x / 100) * layoutSize.width;
        }
        if (yValue.indexOf('%') != -1) {
            y = (y / 100) * layoutSize.height;
        }
        // clean up 'auto' or other non-integer values
        x = isNaN(x) ? 0 : x;
        y = isNaN(y) ? 0 : y;
        // remove padding from measurement
        x -= isOriginLeft ? layoutSize.paddingLeft : layoutSize.paddingRight;
        y -= isOriginTop ? layoutSize.paddingTop : layoutSize.paddingBottom;

        this.position.x = x;
        this.position.y = y;
    };

    // set settled position, apply padding
    proto.layoutPosition = function () {
        var layoutSize = this.layout.size;
        var style = {};
        var isOriginLeft = this.layout._getOption('originLeft');
        var isOriginTop = this.layout._getOption('originTop');

        // x
        var xPadding = isOriginLeft ? 'paddingLeft' : 'paddingRight';
        var xProperty = isOriginLeft ? 'left' : 'right';
        var xResetProperty = isOriginLeft ? 'right' : 'left';

        var x = this.position.x + layoutSize[xPadding];
        // set in percentage or pixels
        style[xProperty] = this.getXValue(x);
        // reset other property
        style[xResetProperty] = '';

        // y
        var yPadding = isOriginTop ? 'paddingTop' : 'paddingBottom';
        var yProperty = isOriginTop ? 'top' : 'bottom';
        var yResetProperty = isOriginTop ? 'bottom' : 'top';

        var y = this.position.y + layoutSize[yPadding];
        // set in percentage or pixels
        style[yProperty] = this.getYValue(y);
        // reset other property
        style[yResetProperty] = '';

        this.css(style);
        this.emitEvent('layout', [this]);
    };

    proto.getXValue = function (x) {
        var isHorizontal = this.layout._getOption('horizontal');
        return this.layout.options.percentPosition && !isHorizontal ?
            ((x / this.layout.size.width) * 100) + '%' : x + 'px';
    };

    proto.getYValue = function (y) {
        var isHorizontal = this.layout._getOption('horizontal');
        return this.layout.options.percentPosition && isHorizontal ?
            ((y / this.layout.size.height) * 100) + '%' : y + 'px';
    };

    proto._transitionTo = function (x, y) {
        this.getPosition();
        // get current x & y from top/left
        var curX = this.position.x;
        var curY = this.position.y;

        var didNotMove = x == this.position.x && y == this.position.y;

        // save end position
        this.setPosition(x, y);

        // if did not move and not transitioning, just go to layout
        if (didNotMove && !this.isTransitioning) {
            this.layoutPosition();
            return;
        }

        var transX = x - curX;
        var transY = y - curY;
        var transitionStyle = {};
        transitionStyle.transform = this.getTranslate(transX, transY);

        this.transition({
            to: transitionStyle,
            onTransitionEnd: {
                transform: this.layoutPosition
            },
            isCleaning: true
        });
    };

    proto.getTranslate = function (x, y) {
        // flip cooridinates if origin on right or bottom
        var isOriginLeft = this.layout._getOption('originLeft');
        var isOriginTop = this.layout._getOption('originTop');
        x = isOriginLeft ? x : -x;
        y = isOriginTop ? y : -y;
        return 'translate3d(' + x + 'px, ' + y + 'px, 0)';
    };

    // non transition + transform support
    proto.goTo = function (x, y) {
        this.setPosition(x, y);
        this.layoutPosition();
    };

    proto.moveTo = proto._transitionTo;

    proto.setPosition = function (x, y) {
        this.position.x = parseFloat(x);
        this.position.y = parseFloat(y);
    };

    // ----- transition ----- //

    /**
     * @param {Object} style - CSS
     * @param {Function} onTransitionEnd
     */

    // non transition, just trigger callback
    proto._nonTransition = function (args) {
        this.css(args.to);
        if (args.isCleaning) {
            this._removeStyles(args.to);
        }
        for (var prop in args.onTransitionEnd) {
            args.onTransitionEnd[prop].call(this);
        }
    };

    /**
     * proper transition
     * @param {Object} args - arguments
     *   @param {Object} to - style to transition to
     *   @param {Object} from - style to start transition from
     *   @param {Boolean} isCleaning - removes transition styles after transition
     *   @param {Function} onTransitionEnd - callback
     */
    proto.transition = function (args) {
        // redirect to nonTransition if no transition duration
        if (!parseFloat(this.layout.options.transitionDuration)) {
            this._nonTransition(args);
            return;
        }

        var _transition = this._transn;
        // keep track of onTransitionEnd callback by css property
        for (var prop in args.onTransitionEnd) {
            _transition.onEnd[prop] = args.onTransitionEnd[prop];
        }
        // keep track of properties that are transitioning
        for (prop in args.to) {
            _transition.ingProperties[prop] = true;
            // keep track of properties to clean up when transition is done
            if (args.isCleaning) {
                _transition.clean[prop] = true;
            }
        }

        // set from styles
        if (args.from) {
            this.css(args.from);
            // force redraw. http://blog.alexmaccaw.com/css-transitions
            var h = this.element.offsetHeight;
            // hack for JSHint to hush about unused var
            h = null;
        }
        // enable transition
        this.enableTransition(args.to);
        // set styles that are transitioning
        this.css(args.to);

        this.isTransitioning = true;

    };

    // dash before all cap letters, including first for
    // WebkitTransform => -webkit-transform
    function toDashedAll(str) {
        return str.replace(/([A-Z])/g, function ($1) {
            return '-' + $1.toLowerCase();
        });
    }

    var transitionProps = 'opacity,' + toDashedAll(transformProperty);

    proto.enableTransition = function (/* style */) {
        // HACK changing transitionProperty during a transition
        // will cause transition to jump
        if (this.isTransitioning) {
            return;
        }

        // make `transition: foo, bar, baz` from style object
        // HACK un-comment this when enableTransition can work
        // while a transition is happening
        // var transitionValues = [];
        // for ( var prop in style ) {
        //   // dash-ify camelCased properties like WebkitTransition
        //   prop = vendorProperties[ prop ] || prop;
        //   transitionValues.push( toDashedAll( prop ) );
        // }
        // munge number to millisecond, to match stagger
        var duration = this.layout.options.transitionDuration;
        duration = typeof duration == 'number' ? duration + 'ms' : duration;
        // enable transition styles
        this.css({
            transitionProperty: transitionProps,
            transitionDuration: duration,
            transitionDelay: this.staggerDelay || 0
        });
        // listen for transition end event
        this.element.addEventListener(transitionEndEvent, this, false);
    };

    // ----- events ----- //

    proto.onwebkitTransitionEnd = function (event) {
        this.ontransitionend(event);
    };

    proto.onotransitionend = function (event) {
        this.ontransitionend(event);
    };

    // properties that I munge to make my life easier
    var dashedVendorProperties = {
        '-webkit-transform': 'transform'
    };

    proto.ontransitionend = function (event) {
        // disregard bubbled events from children
        if (event.target !== this.element) {
            return;
        }
        var _transition = this._transn;
        // get property name of transitioned property, convert to prefix-free
        var propertyName = dashedVendorProperties[event.propertyName] || event.propertyName;

        // remove property that has completed transitioning
        delete _transition.ingProperties[propertyName];
        // check if any properties are still transitioning
        if (isEmptyObj(_transition.ingProperties)) {
            // all properties have completed transitioning
            this.disableTransition();
        }
        // clean style
        if (propertyName in _transition.clean) {
            // clean up style
            this.element.style[event.propertyName] = '';
            delete _transition.clean[propertyName];
        }
        // trigger onTransitionEnd callback
        if (propertyName in _transition.onEnd) {
            var onTransitionEnd = _transition.onEnd[propertyName];
            onTransitionEnd.call(this);
            delete _transition.onEnd[propertyName];
        }

        this.emitEvent('transitionEnd', [this]);
    };

    proto.disableTransition = function () {
        this.removeTransitionStyles();
        this.element.removeEventListener(transitionEndEvent, this, false);
        this.isTransitioning = false;
    };

    /**
     * removes style property from element
     * @param {Object} style
    **/
    proto._removeStyles = function (style) {
        // clean up transition styles
        var cleanStyle = {};
        for (var prop in style) {
            cleanStyle[prop] = '';
        }
        this.css(cleanStyle);
    };

    var cleanTransitionStyle = {
        transitionProperty: '',
        transitionDuration: '',
        transitionDelay: ''
    };

    proto.removeTransitionStyles = function () {
        // remove transition
        this.css(cleanTransitionStyle);
    };

    // ----- stagger ----- //

    proto.stagger = function (delay) {
        delay = isNaN(delay) ? 0 : delay;
        this.staggerDelay = delay + 'ms';
    };

    // ----- show/hide/remove ----- //

    // remove element from DOM
    proto.removeElem = function () {
        this.element.parentNode.removeChild(this.element);
        // remove display: none
        this.css({ display: '' });
        this.emitEvent('remove', [this]);
    };

    proto.remove = function () {
        // just remove element if no transition support or no transition
        if (!transitionProperty || !parseFloat(this.layout.options.transitionDuration)) {
            this.removeElem();
            return;
        }

        // start transition
        this.once('transitionEnd', function () {
            this.removeElem();
        });
        this.hide();
    };

    proto.reveal = function () {
        delete this.isHidden;
        // remove display: none
        this.css({ display: '' });

        var options = this.layout.options;

        var onTransitionEnd = {};
        var transitionEndProperty = this.getHideRevealTransitionEndProperty('visibleStyle');
        onTransitionEnd[transitionEndProperty] = this.onRevealTransitionEnd;

        this.transition({
            from: options.hiddenStyle,
            to: options.visibleStyle,
            isCleaning: true,
            onTransitionEnd: onTransitionEnd
        });
    };

    proto.onRevealTransitionEnd = function () {
        // check if still visible
        // during transition, item may have been hidden
        if (!this.isHidden) {
            this.emitEvent('reveal');
        }
    };

    /**
     * get style property use for hide/reveal transition end
     * @param {String} styleProperty - hiddenStyle/visibleStyle
     * @returns {String}
     */
    proto.getHideRevealTransitionEndProperty = function (styleProperty) {
        var optionStyle = this.layout.options[styleProperty];
        // use opacity
        if (optionStyle.opacity) {
            return 'opacity';
        }
        // get first property
        for (var prop in optionStyle) {
            return prop;
        }
    };

    proto.hide = function () {
        // set flag
        this.isHidden = true;
        // remove display: none
        this.css({ display: '' });

        var options = this.layout.options;

        var onTransitionEnd = {};
        var transitionEndProperty = this.getHideRevealTransitionEndProperty('hiddenStyle');
        onTransitionEnd[transitionEndProperty] = this.onHideTransitionEnd;

        this.transition({
            from: options.visibleStyle,
            to: options.hiddenStyle,
            // keep hidden stuff hidden
            isCleaning: true,
            onTransitionEnd: onTransitionEnd
        });
    };

    proto.onHideTransitionEnd = function () {
        // check if still hidden
        // during transition, item may have been un-hidden
        if (this.isHidden) {
            this.css({ display: 'none' });
            this.emitEvent('hide');
        }
    };

    proto.destroy = function () {
        this.css({
            position: '',
            left: '',
            right: '',
            top: '',
            bottom: '',
            transition: '',
            transform: ''
        });
    };

    return Item;

}));

/*!
 * Outlayer v2.1.1
 * the brains and guts of a layout library
 * MIT license
 */

(function (window, factory) {
    'use strict';
    // universal module definition
    /* jshint strict: false */ /* globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD - RequireJS
        define('outlayer/outlayer', [
            'ev-emitter/ev-emitter',
            'get-size/get-size',
            'fizzy-ui-utils/utils',
            './item'
        ],
            function (EvEmitter, getSize, utils, Item) {
                return factory(window, EvEmitter, getSize, utils, Item);
            }
        );
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS - Browserify, Webpack
        module.exports = factory(
            window,
            require('ev-emitter'),
            require('get-size'),
            require('fizzy-ui-utils'),
            require('./item')
        );
    } else {
        // browser global
        window.Outlayer = factory(
            window,
            window.EvEmitter,
            window.getSize,
            window.fizzyUIUtils,
            window.Outlayer.Item
        );
    }

}(window, function factory(window, EvEmitter, getSize, utils, Item) {
    'use strict';

    // ----- vars ----- //

    var console = window.console;
    var jQuery = window.jQuery;
    var noop = function () { };

    // -------------------------- Outlayer -------------------------- //

    // globally unique identifiers
    var GUID = 0;
    // internal store of all Outlayer intances
    var instances = {};


    /**
     * @param {Element, String} element
     * @param {Object} options
     * @constructor
     */
    function Outlayer(element, options) {
        var queryElement = utils.getQueryElement(element);
        if (!queryElement) {
            if (console) {
                console.error('Bad element for ' + this.constructor.namespace +
                    ': ' + (queryElement || element));
            }
            return;
        }
        this.element = queryElement;
        // add jQuery
        if (jQuery) {
            this.$element = jQuery(this.element);
        }

        // options
        this.options = utils.extend({}, this.constructor.defaults);
        this.option(options);

        // add id for Outlayer.getFromElement
        var id = ++GUID;
        this.element.outlayerGUID = id; // expando
        instances[id] = this; // associate via id

        // kick it off
        this._create();

        var isInitLayout = this._getOption('initLayout');
        if (isInitLayout) {
            this.layout();
        }
    }

    // settings are for internal use only
    Outlayer.namespace = 'outlayer';
    Outlayer.Item = Item;

    // default options
    Outlayer.defaults = {
        containerStyle: {
            position: 'relative'
        },
        initLayout: true,
        originLeft: true,
        originTop: true,
        resize: true,
        resizeContainer: true,
        // item options
        transitionDuration: '0.4s',
        hiddenStyle: {
            opacity: 0,
            transform: 'scale(0.001)'
        },
        visibleStyle: {
            opacity: 1,
            transform: 'scale(1)'
        }
    };

    var proto = Outlayer.prototype;
    // inherit EvEmitter
    utils.extend(proto, EvEmitter.prototype);

    /**
     * set options
     * @param {Object} opts
     */
    proto.option = function (opts) {
        utils.extend(this.options, opts);
    };

    /**
     * get backwards compatible option value, check old name
     */
    proto._getOption = function (option) {
        var oldOption = this.constructor.compatOptions[option];
        return oldOption && this.options[oldOption] !== undefined ?
            this.options[oldOption] : this.options[option];
    };

    Outlayer.compatOptions = {
        // currentName: oldName
        initLayout: 'isInitLayout',
        horizontal: 'isHorizontal',
        layoutInstant: 'isLayoutInstant',
        originLeft: 'isOriginLeft',
        originTop: 'isOriginTop',
        resize: 'isResizeBound',
        resizeContainer: 'isResizingContainer'
    };

    proto._create = function () {
        // get items from children
        this.reloadItems();
        // elements that affect layout, but are not laid out
        this.stamps = [];
        this.stamp(this.options.stamp);
        // set container style
        utils.extend(this.element.style, this.options.containerStyle);

        // bind resize method
        var canBindResize = this._getOption('resize');
        if (canBindResize) {
            this.bindResize();
        }
    };

    // goes through all children again and gets bricks in proper order
    proto.reloadItems = function () {
        // collection of item elements
        this.items = this._itemize(this.element.children);
    };


    /**
     * turn elements into Outlayer.Items to be used in layout
     * @param {Array or NodeList or HTMLElement} elems
     * @returns {Array} items - collection of new Outlayer Items
     */
    proto._itemize = function (elems) {

        var itemElems = this._filterFindItemElements(elems);
        var Item = this.constructor.Item;

        // create new Outlayer Items for collection
        var items = [];
        for (var i = 0; i < itemElems.length; i++) {
            var elem = itemElems[i];
            var item = new Item(elem, this);
            items.push(item);
        }

        return items;
    };

    /**
     * get item elements to be used in layout
     * @param {Array or NodeList or HTMLElement} elems
     * @returns {Array} items - item elements
     */
    proto._filterFindItemElements = function (elems) {
        return utils.filterFindElements(elems, this.options.itemSelector);
    };

    /**
     * getter method for getting item elements
     * @returns {Array} elems - collection of item elements
     */
    proto.getItemElements = function () {
        return this.items.map(function (item) {
            return item.element;
        });
    };

    // ----- init & layout ----- //

    /**
     * lays out all items
     */
    proto.layout = function () {
        this._resetLayout();
        this._manageStamps();

        // don't animate first layout
        var layoutInstant = this._getOption('layoutInstant');
        var isInstant = layoutInstant !== undefined ?
            layoutInstant : !this._isLayoutInited;
        this.layoutItems(this.items, isInstant);

        // flag for initalized
        this._isLayoutInited = true;
    };

    // _init is alias for layout
    proto._init = proto.layout;

    /**
     * logic before any new layout
     */
    proto._resetLayout = function () {
        this.getSize();
    };


    proto.getSize = function () {
        this.size = getSize(this.element);
    };

    /**
     * get measurement from option, for columnWidth, rowHeight, gutter
     * if option is String -> get element from selector string, & get size of element
     * if option is Element -> get size of element
     * else use option as a number
     *
     * @param {String} measurement
     * @param {String} size - width or height
     * @private
     */
    proto._getMeasurement = function (measurement, size) {
        var option = this.options[measurement];
        var elem;
        if (!option) {
            // default to 0
            this[measurement] = 0;
        } else {
            // use option as an element
            if (typeof option == 'string') {
                elem = this.element.querySelector(option);
            } else if (option instanceof HTMLElement) {
                elem = option;
            }
            // use size of element, if element
            this[measurement] = elem ? getSize(elem)[size] : option;
        }
    };

    /**
     * layout a collection of item elements
     * @api public
     */
    proto.layoutItems = function (items, isInstant) {
        items = this._getItemsForLayout(items);

        this._layoutItems(items, isInstant);

        this._postLayout();
    };

    /**
     * get the items to be laid out
     * you may want to skip over some items
     * @param {Array} items
     * @returns {Array} items
     */
    proto._getItemsForLayout = function (items) {
        return items.filter(function (item) {
            return !item.isIgnored;
        });
    };

    /**
     * layout items
     * @param {Array} items
     * @param {Boolean} isInstant
     */
    proto._layoutItems = function (items, isInstant) {
        this._emitCompleteOnItems('layout', items);

        if (!items || !items.length) {
            // no items, emit event with empty array
            return;
        }

        var queue = [];

        items.forEach(function (item) {
            // get x/y object from method
            var position = this._getItemLayoutPosition(item);
            // enqueue
            position.item = item;
            position.isInstant = isInstant || item.isLayoutInstant;
            queue.push(position);
        }, this);

        this._processLayoutQueue(queue);
    };

    /**
     * get item layout position
     * @param {Outlayer.Item} item
     * @returns {Object} x and y position
     */
    proto._getItemLayoutPosition = function ( /* item */) {
        return {
            x: 0,
            y: 0
        };
    };

    /**
     * iterate over array and position each item
     * Reason being - separating this logic prevents 'layout invalidation'
     * thx @paul_irish
     * @param {Array} queue
     */
    proto._processLayoutQueue = function (queue) {
        this.updateStagger();
        queue.forEach(function (obj, i) {
            this._positionItem(obj.item, obj.x, obj.y, obj.isInstant, i);
        }, this);
    };

    // set stagger from option in milliseconds number
    proto.updateStagger = function () {
        var stagger = this.options.stagger;
        if (stagger === null || stagger === undefined) {
            this.stagger = 0;
            return;
        }
        this.stagger = getMilliseconds(stagger);
        return this.stagger;
    };

    /**
     * Sets position of item in DOM
     * @param {Outlayer.Item} item
     * @param {Number} x - horizontal position
     * @param {Number} y - vertical position
     * @param {Boolean} isInstant - disables transitions
     */
    proto._positionItem = function (item, x, y, isInstant, i) {
        if (isInstant) {
            // if not transition, just set CSS
            item.goTo(x, y);
        } else {
            item.stagger(i * this.stagger);
            item.moveTo(x, y);
        }
    };

    /**
     * Any logic you want to do after each layout,
     * i.e. size the container
     */
    proto._postLayout = function () {
        this.resizeContainer();
    };

    proto.resizeContainer = function () {
        var isResizingContainer = this._getOption('resizeContainer');
        if (!isResizingContainer) {
            return;
        }
        var size = this._getContainerSize();
        if (size) {
            this._setContainerMeasure(size.width, true);
            this._setContainerMeasure(size.height, false);
        }
    };

    /**
     * Sets width or height of container if returned
     * @returns {Object} size
     *   @param {Number} width
     *   @param {Number} height
     */
    proto._getContainerSize = noop;

    /**
     * @param {Number} measure - size of width or height
     * @param {Boolean} isWidth
     */
    proto._setContainerMeasure = function (measure, isWidth) {
        if (measure === undefined) {
            return;
        }

        var elemSize = this.size;
        // add padding and border width if border box
        if (elemSize.isBorderBox) {
            measure += isWidth ? elemSize.paddingLeft + elemSize.paddingRight +
                elemSize.borderLeftWidth + elemSize.borderRightWidth :
                elemSize.paddingBottom + elemSize.paddingTop +
                elemSize.borderTopWidth + elemSize.borderBottomWidth;
        }

        measure = Math.max(measure, 0);
        this.element.style[isWidth ? 'width' : 'height'] = measure + 'px';
    };

    /**
     * emit eventComplete on a collection of items events
     * @param {String} eventName
     * @param {Array} items - Outlayer.Items
     */
    proto._emitCompleteOnItems = function (eventName, items) {
        var _this = this;
        function onComplete() {
            _this.dispatchEvent(eventName + 'Complete', null, [items]);
        }

        var count = items.length;
        if (!items || !count) {
            onComplete();
            return;
        }

        var doneCount = 0;
        function tick() {
            doneCount++;
            if (doneCount == count) {
                onComplete();
            }
        }

        // bind callback
        items.forEach(function (item) {
            item.once(eventName, tick);
        });
    };

    /**
     * emits events via EvEmitter and jQuery events
     * @param {String} type - name of event
     * @param {Event} event - original event
     * @param {Array} args - extra arguments
     */
    proto.dispatchEvent = function (type, event, args) {
        // add original event to arguments
        var emitArgs = event ? [event].concat(args) : args;
        this.emitEvent(type, emitArgs);

        if (jQuery) {
            // set this.$element
            this.$element = this.$element || jQuery(this.element);
            if (event) {
                // create jQuery event
                var $event = jQuery.Event(event);
                $event.type = type;
                this.$element.trigger($event, args);
            } else {
                // just trigger with type if no event available
                this.$element.trigger(type, args);
            }
        }
    };

    // -------------------------- ignore & stamps -------------------------- //


    /**
     * keep item in collection, but do not lay it out
     * ignored items do not get skipped in layout
     * @param {Element} elem
     */
    proto.ignore = function (elem) {
        var item = this.getItem(elem);
        if (item) {
            item.isIgnored = true;
        }
    };

    /**
     * return item to layout collection
     * @param {Element} elem
     */
    proto.unignore = function (elem) {
        var item = this.getItem(elem);
        if (item) {
            delete item.isIgnored;
        }
    };

    /**
     * adds elements to stamps
     * @param {NodeList, Array, Element, or String} elems
     */
    proto.stamp = function (elems) {
        elems = this._find(elems);
        if (!elems) {
            return;
        }

        this.stamps = this.stamps.concat(elems);
        // ignore
        elems.forEach(this.ignore, this);
    };

    /**
     * removes elements to stamps
     * @param {NodeList, Array, or Element} elems
     */
    proto.unstamp = function (elems) {
        elems = this._find(elems);
        if (!elems) {
            return;
        }

        elems.forEach(function (elem) {
            // filter out removed stamp elements
            utils.removeFrom(this.stamps, elem);
            this.unignore(elem);
        }, this);
    };

    /**
     * finds child elements
     * @param {NodeList, Array, Element, or String} elems
     * @returns {Array} elems
     */
    proto._find = function (elems) {
        if (!elems) {
            return;
        }
        // if string, use argument as selector string
        if (typeof elems == 'string') {
            elems = this.element.querySelectorAll(elems);
        }
        elems = utils.makeArray(elems);
        return elems;
    };

    proto._manageStamps = function () {
        if (!this.stamps || !this.stamps.length) {
            return;
        }

        this._getBoundingRect();

        this.stamps.forEach(this._manageStamp, this);
    };

    // update boundingLeft / Top
    proto._getBoundingRect = function () {
        // get bounding rect for container element
        var boundingRect = this.element.getBoundingClientRect();
        var size = this.size;
        this._boundingRect = {
            left: boundingRect.left + size.paddingLeft + size.borderLeftWidth,
            top: boundingRect.top + size.paddingTop + size.borderTopWidth,
            right: boundingRect.right - (size.paddingRight + size.borderRightWidth),
            bottom: boundingRect.bottom - (size.paddingBottom + size.borderBottomWidth)
        };
    };

    /**
     * @param {Element} stamp
    **/
    proto._manageStamp = noop;

    /**
     * get x/y position of element relative to container element
     * @param {Element} elem
     * @returns {Object} offset - has left, top, right, bottom
     */
    proto._getElementOffset = function (elem) {
        var boundingRect = elem.getBoundingClientRect();
        var thisRect = this._boundingRect;
        var size = getSize(elem);
        var offset = {
            left: boundingRect.left - thisRect.left - size.marginLeft,
            top: boundingRect.top - thisRect.top - size.marginTop,
            right: thisRect.right - boundingRect.right - size.marginRight,
            bottom: thisRect.bottom - boundingRect.bottom - size.marginBottom
        };
        return offset;
    };

    // -------------------------- resize -------------------------- //

    // enable event handlers for listeners
    // i.e. resize -> onresize
    proto.handleEvent = utils.handleEvent;

    /**
     * Bind layout to window resizing
     */
    proto.bindResize = function () {
        window.addEventListener('resize', this);
        this.isResizeBound = true;
    };

    /**
     * Unbind layout to window resizing
     */
    proto.unbindResize = function () {
        window.removeEventListener('resize', this);
        this.isResizeBound = false;
    };

    proto.onresize = function () {
        this.resize();
    };

    utils.debounceMethod(Outlayer, 'onresize', 100);

    proto.resize = function () {
        // don't trigger if size did not change
        // or if resize was unbound. See #9
        if (!this.isResizeBound || !this.needsResizeLayout()) {
            return;
        }

        this.layout();
    };

    /**
     * check if layout is needed post layout
     * @returns Boolean
     */
    proto.needsResizeLayout = function () {
        var size = getSize(this.element);
        // check that this.size and size are there
        // IE8 triggers resize on body size change, so they might not be
        var hasSizes = this.size && size;
        return hasSizes && size.innerWidth !== this.size.innerWidth;
    };

    // -------------------------- methods -------------------------- //

    /**
     * add items to Outlayer instance
     * @param {Array or NodeList or Element} elems
     * @returns {Array} items - Outlayer.Items
    **/
    proto.addItems = function (elems) {
        var items = this._itemize(elems);
        // add items to collection
        if (items.length) {
            this.items = this.items.concat(items);
        }
        return items;
    };

    /**
     * Layout newly-appended item elements
     * @param {Array or NodeList or Element} elems
     */
    proto.appended = function (elems) {
        var items = this.addItems(elems);
        if (!items.length) {
            return;
        }
        // layout and reveal just the new items
        this.layoutItems(items, true);
        this.reveal(items);
    };

    /**
     * Layout prepended elements
     * @param {Array or NodeList or Element} elems
     */
    proto.prepended = function (elems) {
        var items = this._itemize(elems);
        if (!items.length) {
            return;
        }
        // add items to beginning of collection
        var previousItems = this.items.slice(0);
        this.items = items.concat(previousItems);
        // start new layout
        this._resetLayout();
        this._manageStamps();
        // layout new stuff without transition
        this.layoutItems(items, true);
        this.reveal(items);
        // layout previous items
        this.layoutItems(previousItems);
    };

    /**
     * reveal a collection of items
     * @param {Array of Outlayer.Items} items
     */
    proto.reveal = function (items) {
        this._emitCompleteOnItems('reveal', items);
        if (!items || !items.length) {
            return;
        }
        var stagger = this.updateStagger();
        items.forEach(function (item, i) {
            item.stagger(i * stagger);
            item.reveal();
        });
    };

    /**
     * hide a collection of items
     * @param {Array of Outlayer.Items} items
     */
    proto.hide = function (items) {
        this._emitCompleteOnItems('hide', items);
        if (!items || !items.length) {
            return;
        }
        var stagger = this.updateStagger();
        items.forEach(function (item, i) {
            item.stagger(i * stagger);
            item.hide();
        });
    };

    /**
     * reveal item elements
     * @param {Array}, {Element}, {NodeList} items
     */
    proto.revealItemElements = function (elems) {
        var items = this.getItems(elems);
        this.reveal(items);
    };

    /**
     * hide item elements
     * @param {Array}, {Element}, {NodeList} items
     */
    proto.hideItemElements = function (elems) {
        var items = this.getItems(elems);
        this.hide(items);
    };

    /**
     * get Outlayer.Item, given an Element
     * @param {Element} elem
     * @param {Function} callback
     * @returns {Outlayer.Item} item
     */
    proto.getItem = function (elem) {
        // loop through items to get the one that matches
        for (var i = 0; i < this.items.length; i++) {
            var item = this.items[i];
            if (item.element == elem) {
                // return item
                return item;
            }
        }
    };

    /**
     * get collection of Outlayer.Items, given Elements
     * @param {Array} elems
     * @returns {Array} items - Outlayer.Items
     */
    proto.getItems = function (elems) {
        elems = utils.makeArray(elems);
        var items = [];
        elems.forEach(function (elem) {
            var item = this.getItem(elem);
            if (item) {
                items.push(item);
            }
        }, this);

        return items;
    };

    /**
     * remove element(s) from instance and DOM
     * @param {Array or NodeList or Element} elems
     */
    proto.remove = function (elems) {
        var removeItems = this.getItems(elems);

        this._emitCompleteOnItems('remove', removeItems);

        // bail if no items to remove
        if (!removeItems || !removeItems.length) {
            return;
        }

        removeItems.forEach(function (item) {
            item.remove();
            // remove item from collection
            utils.removeFrom(this.items, item);
        }, this);
    };

    // ----- destroy ----- //

    // remove and disable Outlayer instance
    proto.destroy = function () {
        // clean up dynamic styles
        var style = this.element.style;
        style.height = '';
        style.position = '';
        style.width = '';
        // destroy items
        this.items.forEach(function (item) {
            item.destroy();
        });

        this.unbindResize();

        var id = this.element.outlayerGUID;
        delete instances[id]; // remove reference to instance by id
        delete this.element.outlayerGUID;
        // remove data for jQuery
        if (jQuery) {
            jQuery.removeData(this.element, this.constructor.namespace);
        }

    };

    // -------------------------- data -------------------------- //

    /**
     * get Outlayer instance from element
     * @param {Element} elem
     * @returns {Outlayer}
     */
    Outlayer.data = function (elem) {
        elem = utils.getQueryElement(elem);
        var id = elem && elem.outlayerGUID;
        return id && instances[id];
    };


    // -------------------------- create Outlayer class -------------------------- //

    /**
     * create a layout class
     * @param {String} namespace
     */
    Outlayer.create = function (namespace, options) {
        // sub-class Outlayer
        var Layout = subclass(Outlayer);
        // apply new options and compatOptions
        Layout.defaults = utils.extend({}, Outlayer.defaults);
        utils.extend(Layout.defaults, options);
        Layout.compatOptions = utils.extend({}, Outlayer.compatOptions);

        Layout.namespace = namespace;

        Layout.data = Outlayer.data;

        // sub-class Item
        Layout.Item = subclass(Item);

        // -------------------------- declarative -------------------------- //

        utils.htmlInit(Layout, namespace);

        // -------------------------- jQuery bridge -------------------------- //

        // make into jQuery plugin
        if (jQuery && jQuery.bridget) {
            jQuery.bridget(namespace, Layout);
        }

        return Layout;
    };

    function subclass(Parent) {
        function SubClass() {
            Parent.apply(this, arguments);
        }

        SubClass.prototype = Object.create(Parent.prototype);
        SubClass.prototype.constructor = SubClass;

        return SubClass;
    }

    // ----- helpers ----- //

    // how many milliseconds are in each unit
    var msUnits = {
        ms: 1,
        s: 1000
    };

    // munge time-like parameter into millisecond number
    // '0.4s' -> 40
    function getMilliseconds(time) {
        if (typeof time == 'number') {
            return time;
        }
        var matches = time.match(/(^\d*\.?\d*)(\w*)/);
        var num = matches && matches[1];
        var unit = matches && matches[2];
        if (!num.length) {
            return 0;
        }
        num = parseFloat(num);
        var mult = msUnits[unit] || 1;
        return num * mult;
    }

    // ----- fin ----- //

    // back in global
    Outlayer.Item = Item;

    return Outlayer;

}));

/**
 * Isotope Item
**/

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('isotope-layout/js/item', [
            'outlayer/outlayer'
        ],
            factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            require('outlayer')
        );
    } else {
        // browser global
        window.Isotope = window.Isotope || {};
        window.Isotope.Item = factory(
            window.Outlayer
        );
    }

}(window, function factory(Outlayer) {
    'use strict';

    // -------------------------- Item -------------------------- //

    // sub-class Outlayer Item
    function Item() {
        Outlayer.Item.apply(this, arguments);
    }

    var proto = Item.prototype = Object.create(Outlayer.Item.prototype);

    var _create = proto._create;
    proto._create = function () {
        // assign id, used for original-order sorting
        this.id = this.layout.itemGUID++;
        _create.call(this);
        this.sortData = {};
    };

    proto.updateSortData = function () {
        if (this.isIgnored) {
            return;
        }
        // default sorters
        this.sortData.id = this.id;
        // for backward compatibility
        this.sortData['original-order'] = this.id;
        this.sortData.random = Math.random();
        // go thru getSortData obj and apply the sorters
        var getSortData = this.layout.options.getSortData;
        var sorters = this.layout._sorters;
        for (var key in getSortData) {
            var sorter = sorters[key];
            this.sortData[key] = sorter(this.element, this);
        }
    };

    var _destroy = proto.destroy;
    proto.destroy = function () {
        // call super
        _destroy.apply(this, arguments);
        // reset display, #741
        this.css({
            display: ''
        });
    };

    return Item;

}));

/**
 * Isotope LayoutMode
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('isotope-layout/js/layout-mode', [
            'get-size/get-size',
            'outlayer/outlayer'
        ],
            factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            require('get-size'),
            require('outlayer')
        );
    } else {
        // browser global
        window.Isotope = window.Isotope || {};
        window.Isotope.LayoutMode = factory(
            window.getSize,
            window.Outlayer
        );
    }

}(window, function factory(getSize, Outlayer) {
    'use strict';

    // layout mode class
    function LayoutMode(isotope) {
        this.isotope = isotope;
        // link properties
        if (isotope) {
            this.options = isotope.options[this.namespace];
            this.element = isotope.element;
            this.items = isotope.filteredItems;
            this.size = isotope.size;
        }
    }

    var proto = LayoutMode.prototype;

    /**
     * some methods should just defer to default Outlayer method
     * and reference the Isotope instance as `this`
    **/
    var facadeMethods = [
        '_resetLayout',
        '_getItemLayoutPosition',
        '_manageStamp',
        '_getContainerSize',
        '_getElementOffset',
        'needsResizeLayout',
        '_getOption'
    ];

    facadeMethods.forEach(function (methodName) {
        proto[methodName] = function () {
            return Outlayer.prototype[methodName].apply(this.isotope, arguments);
        };
    });

    // -----  ----- //

    // for horizontal layout modes, check vertical size
    proto.needsVerticalResizeLayout = function () {
        // don't trigger if size did not change
        var size = getSize(this.isotope.element);
        // check that this.size and size are there
        // IE8 triggers resize on body size change, so they might not be
        var hasSizes = this.isotope.size && size;
        return hasSizes && size.innerHeight != this.isotope.size.innerHeight;
    };

    // ----- measurements ----- //

    proto._getMeasurement = function () {
        this.isotope._getMeasurement.apply(this, arguments);
    };

    proto.getColumnWidth = function () {
        this.getSegmentSize('column', 'Width');
    };

    proto.getRowHeight = function () {
        this.getSegmentSize('row', 'Height');
    };

    /**
     * get columnWidth or rowHeight
     * segment: 'column' or 'row'
     * size 'Width' or 'Height'
    **/
    proto.getSegmentSize = function (segment, size) {
        var segmentName = segment + size;
        var outerSize = 'outer' + size;
        // columnWidth / outerWidth // rowHeight / outerHeight
        this._getMeasurement(segmentName, outerSize);
        // got rowHeight or columnWidth, we can chill
        if (this[segmentName]) {
            return;
        }
        // fall back to item of first element
        var firstItemSize = this.getFirstItemSize();
        this[segmentName] = firstItemSize && firstItemSize[outerSize] ||
            // or size of container
            this.isotope.size['inner' + size];
    };

    proto.getFirstItemSize = function () {
        var firstItem = this.isotope.filteredItems[0];
        return firstItem && firstItem.element && getSize(firstItem.element);
    };

    // ----- methods that should reference isotope ----- //

    proto.layout = function () {
        this.isotope.layout.apply(this.isotope, arguments);
    };

    proto.getSize = function () {
        this.isotope.getSize();
        this.size = this.isotope.size;
    };

    // -------------------------- create -------------------------- //

    LayoutMode.modes = {};

    LayoutMode.create = function (namespace, options) {

        function Mode() {
            LayoutMode.apply(this, arguments);
        }

        Mode.prototype = Object.create(proto);
        Mode.prototype.constructor = Mode;

        // default options
        if (options) {
            Mode.options = options;
        }

        Mode.prototype.namespace = namespace;
        // register in Isotope
        LayoutMode.modes[namespace] = Mode;

        return Mode;
    };

    return LayoutMode;

}));

/*!
 * Masonry v4.2.1
 * Cascading grid layout library
 * https://masonry.desandro.com
 * MIT License
 * by David DeSandro
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('masonry-layout/masonry', [
            'outlayer/outlayer',
            'get-size/get-size'
        ],
            factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            require('outlayer'),
            require('get-size')
        );
    } else {
        // browser global
        window.Masonry = factory(
            window.Outlayer,
            window.getSize
        );
    }

}(window, function factory(Outlayer, getSize) {



    // -------------------------- masonryDefinition -------------------------- //

    // create an Outlayer layout class
    var Masonry = Outlayer.create('masonry');
    // isFitWidth -> fitWidth
    Masonry.compatOptions.fitWidth = 'isFitWidth';

    var proto = Masonry.prototype;

    proto._resetLayout = function () {
        this.getSize();
        this._getMeasurement('columnWidth', 'outerWidth');
        this._getMeasurement('gutter', 'outerWidth');
        this.measureColumns();

        // reset column Y
        this.colYs = [];
        for (var i = 0; i < this.cols; i++) {
            this.colYs.push(0);
        }

        this.maxY = 0;
        this.horizontalColIndex = 0;
    };

    proto.measureColumns = function () {
        this.getContainerWidth();
        // if columnWidth is 0, default to outerWidth of first item
        if (!this.columnWidth) {
            var firstItem = this.items[0];
            var firstItemElem = firstItem && firstItem.element;
            // columnWidth fall back to item of first element
            this.columnWidth = firstItemElem && getSize(firstItemElem).outerWidth ||
                // if first elem has no width, default to size of container
                this.containerWidth;
        }

        var columnWidth = this.columnWidth += this.gutter;

        // calculate columns
        var containerWidth = this.containerWidth + this.gutter;
        var cols = containerWidth / columnWidth;
        // fix rounding errors, typically with gutters
        var excess = columnWidth - containerWidth % columnWidth;
        // if overshoot is less than a pixel, round up, otherwise floor it
        var mathMethod = excess && excess < 1 ? 'round' : 'floor';
        cols = Math[mathMethod](cols);
        this.cols = Math.max(cols, 1);
    };

    proto.getContainerWidth = function () {
        // container is parent if fit width
        var isFitWidth = this._getOption('fitWidth');
        var container = isFitWidth ? this.element.parentNode : this.element;
        // check that this.size and size are there
        // IE8 triggers resize on body size change, so they might not be
        var size = getSize(container);
        this.containerWidth = size && size.innerWidth;
    };

    proto._getItemLayoutPosition = function (item) {
        item.getSize();
        // how many columns does this brick span
        var remainder = item.size.outerWidth % this.columnWidth;
        var mathMethod = remainder && remainder < 1 ? 'round' : 'ceil';
        // round if off by 1 pixel, otherwise use ceil
        var colSpan = Math[mathMethod](item.size.outerWidth / this.columnWidth);
        colSpan = Math.min(colSpan, this.cols);
        // use horizontal or top column position
        var colPosMethod = this.options.horizontalOrder ?
            '_getHorizontalColPosition' : '_getTopColPosition';
        var colPosition = this[colPosMethod](colSpan, item);
        // position the brick
        var position = {
            x: this.columnWidth * colPosition.col,
            y: colPosition.y
        };
        // apply setHeight to necessary columns
        var setHeight = colPosition.y + item.size.outerHeight;
        var setMax = colSpan + colPosition.col;
        for (var i = colPosition.col; i < setMax; i++) {
            this.colYs[i] = setHeight;
        }

        return position;
    };

    proto._getTopColPosition = function (colSpan) {
        var colGroup = this._getTopColGroup(colSpan);
        // get the minimum Y value from the columns
        var minimumY = Math.min.apply(Math, colGroup);

        return {
            col: colGroup.indexOf(minimumY),
            y: minimumY,
        };
    };

    /**
     * @param {Number} colSpan - number of columns the element spans
     * @returns {Array} colGroup
     */
    proto._getTopColGroup = function (colSpan) {
        if (colSpan < 2) {
            // if brick spans only one column, use all the column Ys
            return this.colYs;
        }

        var colGroup = [];
        // how many different places could this brick fit horizontally
        var groupCount = this.cols + 1 - colSpan;
        // for each group potential horizontal position
        for (var i = 0; i < groupCount; i++) {
            colGroup[i] = this._getColGroupY(i, colSpan);
        }
        return colGroup;
    };

    proto._getColGroupY = function (col, colSpan) {
        if (colSpan < 2) {
            return this.colYs[col];
        }
        // make an array of colY values for that one group
        var groupColYs = this.colYs.slice(col, col + colSpan);
        // and get the max value of the array
        return Math.max.apply(Math, groupColYs);
    };

    // get column position based on horizontal index. #873
    proto._getHorizontalColPosition = function (colSpan, item) {
        var col = this.horizontalColIndex % this.cols;
        var isOver = colSpan > 1 && col + colSpan > this.cols;
        // shift to next row if item can't fit on current row
        col = isOver ? 0 : col;
        // don't let zero-size items take up space
        var hasSize = item.size.outerWidth && item.size.outerHeight;
        this.horizontalColIndex = hasSize ? col + colSpan : this.horizontalColIndex;

        return {
            col: col,
            y: this._getColGroupY(col, colSpan),
        };
    };

    proto._manageStamp = function (stamp) {
        var stampSize = getSize(stamp);
        var offset = this._getElementOffset(stamp);
        // get the columns that this stamp affects
        var isOriginLeft = this._getOption('originLeft');
        var firstX = isOriginLeft ? offset.left : offset.right;
        var lastX = firstX + stampSize.outerWidth;
        var firstCol = Math.floor(firstX / this.columnWidth);
        firstCol = Math.max(0, firstCol);
        var lastCol = Math.floor(lastX / this.columnWidth);
        // lastCol should not go over if multiple of columnWidth #425
        lastCol -= lastX % this.columnWidth ? 0 : 1;
        lastCol = Math.min(this.cols - 1, lastCol);
        // set colYs to bottom of the stamp

        var isOriginTop = this._getOption('originTop');
        var stampMaxY = (isOriginTop ? offset.top : offset.bottom) +
            stampSize.outerHeight;
        for (var i = firstCol; i <= lastCol; i++) {
            this.colYs[i] = Math.max(stampMaxY, this.colYs[i]);
        }
    };

    proto._getContainerSize = function () {
        this.maxY = Math.max.apply(Math, this.colYs);
        var size = {
            height: this.maxY
        };

        if (this._getOption('fitWidth')) {
            size.width = this._getContainerFitWidth();
        }

        return size;
    };

    proto._getContainerFitWidth = function () {
        var unusedCols = 0;
        // count unused columns
        var i = this.cols;
        while (--i) {
            if (this.colYs[i] !== 0) {
                break;
            }
            unusedCols++;
        }
        // fit container to columns that have been used
        return (this.cols - unusedCols) * this.columnWidth - this.gutter;
    };

    proto.needsResizeLayout = function () {
        var previousWidth = this.containerWidth;
        this.getContainerWidth();
        return previousWidth != this.containerWidth;
    };

    return Masonry;

}));

/*!
 * Masonry layout mode
 * sub-classes Masonry
 * https://masonry.desandro.com
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('isotope-layout/js/layout-modes/masonry', [
            '../layout-mode',
            'masonry-layout/masonry'
        ],
            factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            require('../layout-mode'),
            require('masonry-layout')
        );
    } else {
        // browser global
        factory(
            window.Isotope.LayoutMode,
            window.Masonry
        );
    }

}(window, function factory(LayoutMode, Masonry) {
    'use strict';

    // -------------------------- masonryDefinition -------------------------- //

    // create an Outlayer layout class
    var MasonryMode = LayoutMode.create('masonry');

    var proto = MasonryMode.prototype;

    var keepModeMethods = {
        _getElementOffset: true,
        layout: true,
        _getMeasurement: true
    };

    // inherit Masonry prototype
    for (var method in Masonry.prototype) {
        // do not inherit mode methods
        if (!keepModeMethods[method]) {
            proto[method] = Masonry.prototype[method];
        }
    }

    var measureColumns = proto.measureColumns;
    proto.measureColumns = function () {
        // set items, used if measuring first item
        this.items = this.isotope.filteredItems;
        measureColumns.call(this);
    };

    // point to mode options for fitWidth
    var _getOption = proto._getOption;
    proto._getOption = function (option) {
        if (option == 'fitWidth') {
            return this.options.isFitWidth !== undefined ?
                this.options.isFitWidth : this.options.fitWidth;
        }
        return _getOption.apply(this.isotope, arguments);
    };

    return MasonryMode;

}));

/**
 * fitRows layout mode
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('isotope-layout/js/layout-modes/fit-rows', [
            '../layout-mode'
        ],
            factory);
    } else if (typeof exports == 'object') {
        // CommonJS
        module.exports = factory(
            require('../layout-mode')
        );
    } else {
        // browser global
        factory(
            window.Isotope.LayoutMode
        );
    }

}(window, function factory(LayoutMode) {
    'use strict';

    var FitRows = LayoutMode.create('fitRows');

    var proto = FitRows.prototype;

    proto._resetLayout = function () {
        this.x = 0;
        this.y = 0;
        this.maxY = 0;
        this._getMeasurement('gutter', 'outerWidth');
    };

    proto._getItemLayoutPosition = function (item) {
        item.getSize();

        var itemWidth = item.size.outerWidth + this.gutter;
        // if this element cannot fit in the current row
        var containerWidth = this.isotope.size.innerWidth + this.gutter;
        if (this.x !== 0 && itemWidth + this.x > containerWidth) {
            this.x = 0;
            this.y = this.maxY;
        }

        var position = {
            x: this.x,
            y: this.y
        };

        this.maxY = Math.max(this.maxY, this.y + item.size.outerHeight);
        this.x += itemWidth;

        return position;
    };

    proto._getContainerSize = function () {
        return { height: this.maxY };
    };

    return FitRows;

}));

/**
 * vertical layout mode
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define('isotope-layout/js/layout-modes/vertical', [
            '../layout-mode'
        ],
            factory);
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            require('../layout-mode')
        );
    } else {
        // browser global
        factory(
            window.Isotope.LayoutMode
        );
    }

}(window, function factory(LayoutMode) {
    'use strict';

    var Vertical = LayoutMode.create('vertical', {
        horizontalAlignment: 0
    });

    var proto = Vertical.prototype;

    proto._resetLayout = function () {
        this.y = 0;
    };

    proto._getItemLayoutPosition = function (item) {
        item.getSize();
        var x = (this.isotope.size.innerWidth - item.size.outerWidth) *
            this.options.horizontalAlignment;
        var y = this.y;
        this.y += item.size.outerHeight;
        return { x: x, y: y };
    };

    proto._getContainerSize = function () {
        return { height: this.y };
    };

    return Vertical;

}));

/*!
 * Isotope v3.0.6
 *
 * Licensed GPLv3 for open source use
 * or Isotope Commercial License for commercial use
 *
 * https://isotope.metafizzy.co
 * Copyright 2010-2018 Metafizzy
 */

(function (window, factory) {
    // universal module definition
    /* jshint strict: false */ /*globals define, module, require */
    if (typeof define == 'function' && define.amd) {
        // AMD
        define([
            'outlayer/outlayer',
            'get-size/get-size',
            'desandro-matches-selector/matches-selector',
            'fizzy-ui-utils/utils',
            'isotope-layout/js/item',
            'isotope-layout/js/layout-mode',
            // include default layout modes
            'isotope-layout/js/layout-modes/masonry',
            'isotope-layout/js/layout-modes/fit-rows',
            'isotope-layout/js/layout-modes/vertical'
        ],
            function (Outlayer, getSize, matchesSelector, utils, Item, LayoutMode) {
                return factory(window, Outlayer, getSize, matchesSelector, utils, Item, LayoutMode);
            });
    } else if (typeof module == 'object' && module.exports) {
        // CommonJS
        module.exports = factory(
            window,
            require('outlayer'),
            require('get-size'),
            require('desandro-matches-selector'),
            require('fizzy-ui-utils'),
            require('isotope-layout/js/item'),
            require('isotope-layout/js/layout-mode'),
            // include default layout modes
            require('isotope-layout/js/layout-modes/masonry'),
            require('isotope-layout/js/layout-modes/fit-rows'),
            require('isotope-layout/js/layout-modes/vertical')
        );
    } else {
        // browser global
        window.Isotope = factory(
            window,
            window.Outlayer,
            window.getSize,
            window.matchesSelector,
            window.fizzyUIUtils,
            window.Isotope.Item,
            window.Isotope.LayoutMode
        );
    }

}(window, function factory(window, Outlayer, getSize, matchesSelector, utils,
    Item, LayoutMode) {



    // -------------------------- vars -------------------------- //

    var jQuery = window.jQuery;

    // -------------------------- helpers -------------------------- //

    var trim = String.prototype.trim ?
        function (str) {
            return str.trim();
        } :
        function (str) {
            return str.replace(/^\s+|\s+$/g, '');
        };

    // -------------------------- isotopeDefinition -------------------------- //

    // create an Outlayer layout class
    var Isotope = Outlayer.create('isotope', {
        layoutMode: 'masonry',
        isJQueryFiltering: true,
        sortAscending: true
    });

    Isotope.Item = Item;
    Isotope.LayoutMode = LayoutMode;

    var proto = Isotope.prototype;

    proto._create = function () {
        this.itemGUID = 0;
        // functions that sort items
        this._sorters = {};
        this._getSorters();
        // call super
        Outlayer.prototype._create.call(this);

        // create layout modes
        this.modes = {};
        // start filteredItems with all items
        this.filteredItems = this.items;
        // keep of track of sortBys
        this.sortHistory = ['original-order'];
        // create from registered layout modes
        for (var name in LayoutMode.modes) {
            this._initLayoutMode(name);
        }
    };

    proto.reloadItems = function () {
        // reset item ID counter
        this.itemGUID = 0;
        // call super
        Outlayer.prototype.reloadItems.call(this);
    };

    proto._itemize = function () {
        var items = Outlayer.prototype._itemize.apply(this, arguments);
        // assign ID for original-order
        for (var i = 0; i < items.length; i++) {
            var item = items[i];
            item.id = this.itemGUID++;
        }
        this._updateItemsSortData(items);
        return items;
    };


    // -------------------------- layout -------------------------- //

    proto._initLayoutMode = function (name) {
        var Mode = LayoutMode.modes[name];
        // set mode options
        // HACK extend initial options, back-fill in default options
        var initialOpts = this.options[name] || {};
        this.options[name] = Mode.options ?
            utils.extend(Mode.options, initialOpts) : initialOpts;
        // init layout mode instance
        this.modes[name] = new Mode(this);
    };


    proto.layout = function () {
        // if first time doing layout, do all magic
        if (!this._isLayoutInited && this._getOption('initLayout')) {
            this.arrange();
            return;
        }
        this._layout();
    };

    // private method to be used in layout() & magic()
    proto._layout = function () {
        // don't animate first layout
        var isInstant = this._getIsInstant();
        // layout flow
        this._resetLayout();
        this._manageStamps();
        this.layoutItems(this.filteredItems, isInstant);

        // flag for initalized
        this._isLayoutInited = true;
    };

    // filter + sort + layout
    proto.arrange = function (opts) {
        // set any options pass
        this.option(opts);
        this._getIsInstant();
        // filter, sort, and layout

        // filter
        var filtered = this._filter(this.items);
        this.filteredItems = filtered.matches;

        this._bindArrangeComplete();

        if (this._isInstant) {
            this._noTransition(this._hideReveal, [filtered]);
        } else {
            this._hideReveal(filtered);
        }

        this._sort();
        this._layout();
    };
    // alias to _init for main plugin method
    proto._init = proto.arrange;

    proto._hideReveal = function (filtered) {
        this.reveal(filtered.needReveal);
        this.hide(filtered.needHide);
    };

    // HACK
    // Don't animate/transition first layout
    // Or don't animate/transition other layouts
    proto._getIsInstant = function () {
        var isLayoutInstant = this._getOption('layoutInstant');
        var isInstant = isLayoutInstant !== undefined ? isLayoutInstant :
            !this._isLayoutInited;
        this._isInstant = isInstant;
        return isInstant;
    };

    // listen for layoutComplete, hideComplete and revealComplete
    // to trigger arrangeComplete
    proto._bindArrangeComplete = function () {
        // listen for 3 events to trigger arrangeComplete
        var isLayoutComplete, isHideComplete, isRevealComplete;
        var _this = this;
        function arrangeParallelCallback() {
            if (isLayoutComplete && isHideComplete && isRevealComplete) {
                _this.dispatchEvent('arrangeComplete', null, [_this.filteredItems]);
            }
        }
        this.once('layoutComplete', function () {
            isLayoutComplete = true;
            arrangeParallelCallback();
        });
        this.once('hideComplete', function () {
            isHideComplete = true;
            arrangeParallelCallback();
        });
        this.once('revealComplete', function () {
            isRevealComplete = true;
            arrangeParallelCallback();
        });
    };

    // -------------------------- filter -------------------------- //

    proto._filter = function (items) {
        var filter = this.options.filter;
        filter = filter || '*';
        var matches = [];
        var hiddenMatched = [];
        var visibleUnmatched = [];

        var test = this._getFilterTest(filter);

        // test each item
        for (var i = 0; i < items.length; i++) {
            var item = items[i];
            if (item.isIgnored) {
                continue;
            }
            // add item to either matched or unmatched group
            var isMatched = test(item);
            // item.isFilterMatched = isMatched;
            // add to matches if its a match
            if (isMatched) {
                matches.push(item);
            }
            // add to additional group if item needs to be hidden or revealed
            if (isMatched && item.isHidden) {
                hiddenMatched.push(item);
            } else if (!isMatched && !item.isHidden) {
                visibleUnmatched.push(item);
            }
        }

        // return collections of items to be manipulated
        return {
            matches: matches,
            needReveal: hiddenMatched,
            needHide: visibleUnmatched
        };
    };

    // get a jQuery, function, or a matchesSelector test given the filter
    proto._getFilterTest = function (filter) {
        if (jQuery && this.options.isJQueryFiltering) {
            // use jQuery
            return function (item) {
                return jQuery(item.element).is(filter);
            };
        }
        if (typeof filter == 'function') {
            // use filter as function
            return function (item) {
                return filter(item.element);
            };
        }
        // default, use filter as selector string
        return function (item) {
            return matchesSelector(item.element, filter);
        };
    };

    // -------------------------- sorting -------------------------- //

    /**
     * @params {Array} elems
     * @public
     */
    proto.updateSortData = function (elems) {
        // get items
        var items;
        if (elems) {
            elems = utils.makeArray(elems);
            items = this.getItems(elems);
        } else {
            // update all items if no elems provided
            items = this.items;
        }

        this._getSorters();
        this._updateItemsSortData(items);
    };

    proto._getSorters = function () {
        var getSortData = this.options.getSortData;
        for (var key in getSortData) {
            var sorter = getSortData[key];
            this._sorters[key] = mungeSorter(sorter);
        }
    };

    /**
     * @params {Array} items - of Isotope.Items
     * @private
     */
    proto._updateItemsSortData = function (items) {
        // do not update if no items
        var len = items && items.length;

        for (var i = 0; len && i < len; i++) {
            var item = items[i];
            item.updateSortData();
        }
    };

    // ----- munge sorter ----- //

    // encapsulate this, as we just need mungeSorter
    // other functions in here are just for munging
    var mungeSorter = (function () {
        // add a magic layer to sorters for convienent shorthands
        // `.foo-bar` will use the text of .foo-bar querySelector
        // `[foo-bar]` will use attribute
        // you can also add parser
        // `.foo-bar parseInt` will parse that as a number
        function mungeSorter(sorter) {
            // if not a string, return function or whatever it is
            if (typeof sorter != 'string') {
                return sorter;
            }
            // parse the sorter string
            var args = trim(sorter).split(' ');
            var query = args[0];
            // check if query looks like [an-attribute]
            var attrMatch = query.match(/^\[(.+)\]$/);
            var attr = attrMatch && attrMatch[1];
            var getValue = getValueGetter(attr, query);
            // use second argument as a parser
            var parser = Isotope.sortDataParsers[args[1]];
            // parse the value, if there was a parser
            sorter = parser ? function (elem) {
                return elem && parser(getValue(elem));
            } :
                // otherwise just return value
                function (elem) {
                    return elem && getValue(elem);
                };

            return sorter;
        }

        // get an attribute getter, or get text of the querySelector
        function getValueGetter(attr, query) {
            // if query looks like [foo-bar], get attribute
            if (attr) {
                return function getAttribute(elem) {
                    return elem.getAttribute(attr);
                };
            }

            // otherwise, assume its a querySelector, and get its text
            return function getChildText(elem) {
                var child = elem.querySelector(query);
                return child && child.textContent;
            };
        }

        return mungeSorter;
    })();

    // parsers used in getSortData shortcut strings
    Isotope.sortDataParsers = {
        'parseInt': function (val) {
            return parseInt(val, 10);
        },
        'parseFloat': function (val) {
            return parseFloat(val);
        }
    };

    // ----- sort method ----- //

    // sort filteredItem order
    proto._sort = function () {
        if (!this.options.sortBy) {
            return;
        }
        // keep track of sortBy History
        var sortBys = utils.makeArray(this.options.sortBy);
        if (!this._getIsSameSortBy(sortBys)) {
            // concat all sortBy and sortHistory, add to front, oldest goes in last
            this.sortHistory = sortBys.concat(this.sortHistory);
        }
        // sort magic
        var itemSorter = getItemSorter(this.sortHistory, this.options.sortAscending);
        this.filteredItems.sort(itemSorter);
    };

    // check if sortBys is same as start of sortHistory
    proto._getIsSameSortBy = function (sortBys) {
        for (var i = 0; i < sortBys.length; i++) {
            if (sortBys[i] != this.sortHistory[i]) {
                return false;
            }
        }
        return true;
    };

    // returns a function used for sorting
    function getItemSorter(sortBys, sortAsc) {
        return function sorter(itemA, itemB) {
            // cycle through all sortKeys
            for (var i = 0; i < sortBys.length; i++) {
                var sortBy = sortBys[i];
                var a = itemA.sortData[sortBy];
                var b = itemB.sortData[sortBy];
                if (a > b || a < b) {
                    // if sortAsc is an object, use the value given the sortBy key
                    var isAscending = sortAsc[sortBy] !== undefined ? sortAsc[sortBy] : sortAsc;
                    var direction = isAscending ? 1 : -1;
                    return (a > b ? 1 : -1) * direction;
                }
            }
            return 0;
        };
    }

    // -------------------------- methods -------------------------- //

    // get layout mode
    proto._mode = function () {
        var layoutMode = this.options.layoutMode;
        var mode = this.modes[layoutMode];
        if (!mode) {
            // TODO console.error
            throw new Error('No layout mode: ' + layoutMode);
        }
        // HACK sync mode's options
        // any options set after init for layout mode need to be synced
        mode.options = this.options[layoutMode];
        return mode;
    };

    proto._resetLayout = function () {
        // trigger original reset layout
        Outlayer.prototype._resetLayout.call(this);
        this._mode()._resetLayout();
    };

    proto._getItemLayoutPosition = function (item) {
        return this._mode()._getItemLayoutPosition(item);
    };

    proto._manageStamp = function (stamp) {
        this._mode()._manageStamp(stamp);
    };

    proto._getContainerSize = function () {
        return this._mode()._getContainerSize();
    };

    proto.needsResizeLayout = function () {
        return this._mode().needsResizeLayout();
    };

    // -------------------------- adding & removing -------------------------- //

    // HEADS UP overwrites default Outlayer appended
    proto.appended = function (elems) {
        var items = this.addItems(elems);
        if (!items.length) {
            return;
        }
        // filter, layout, reveal new items
        var filteredItems = this._filterRevealAdded(items);
        // add to filteredItems
        this.filteredItems = this.filteredItems.concat(filteredItems);
    };

    // HEADS UP overwrites default Outlayer prepended
    proto.prepended = function (elems) {
        var items = this._itemize(elems);
        if (!items.length) {
            return;
        }
        // start new layout
        this._resetLayout();
        this._manageStamps();
        // filter, layout, reveal new items
        var filteredItems = this._filterRevealAdded(items);
        // layout previous items
        this.layoutItems(this.filteredItems);
        // add to items and filteredItems
        this.filteredItems = filteredItems.concat(this.filteredItems);
        this.items = items.concat(this.items);
    };

    proto._filterRevealAdded = function (items) {
        var filtered = this._filter(items);
        this.hide(filtered.needHide);
        // reveal all new items
        this.reveal(filtered.matches);
        // layout new items, no transition
        this.layoutItems(filtered.matches, true);
        return filtered.matches;
    };

    /**
     * Filter, sort, and layout newly-appended item elements
     * @param {Array or NodeList or Element} elems
     */
    proto.insert = function (elems) {
        var items = this.addItems(elems);
        if (!items.length) {
            return;
        }
        // append item elements
        var i, item;
        var len = items.length;
        for (i = 0; i < len; i++) {
            item = items[i];
            this.element.appendChild(item.element);
        }
        // filter new stuff
        var filteredInsertItems = this._filter(items).matches;
        // set flag
        for (i = 0; i < len; i++) {
            items[i].isLayoutInstant = true;
        }
        this.arrange();
        // reset flag
        for (i = 0; i < len; i++) {
            delete items[i].isLayoutInstant;
        }
        this.reveal(filteredInsertItems);
    };

    var _remove = proto.remove;
    proto.remove = function (elems) {
        elems = utils.makeArray(elems);
        var removeItems = this.getItems(elems);
        // do regular thing
        _remove.call(this, elems);
        // bail if no items to remove
        var len = removeItems && removeItems.length;
        // remove elems from filteredItems
        for (var i = 0; len && i < len; i++) {
            var item = removeItems[i];
            // remove item from collection
            utils.removeFrom(this.filteredItems, item);
        }
    };

    proto.shuffle = function () {
        // update random sortData
        for (var i = 0; i < this.items.length; i++) {
            var item = this.items[i];
            item.sortData.random = Math.random();
        }
        this.options.sortBy = 'random';
        this._sort();
        this._layout();
    };

    /**
     * trigger fn without transition
     * kind of hacky to have this in the first place
     * @param {Function} fn
     * @param {Array} args
     * @returns ret
     * @private
     */
    proto._noTransition = function (fn, args) {
        // save transitionDuration before disabling
        var transitionDuration = this.options.transitionDuration;
        // disable transition
        this.options.transitionDuration = 0;
        // do it
        var returnValue = fn.apply(this, args);
        // re-enable transition for reveal
        this.options.transitionDuration = transitionDuration;
        return returnValue;
    };

    // ----- helper methods ----- //

    /**
     * getter method for getting filtered item elements
     * @returns {Array} elems - collection of item elements
     */
    proto.getFilteredItemElements = function () {
        return this.filteredItems.map(function (item) {
            return item.element;
        });
    };

    // -----  ----- //

    return Isotope;

}));

